Summer makes us smell a little extra ripe. Experts share how to handle it.
Sweat is a hallmark of summer, and if you’re not careful, body odor can be, too.
But it doesn’t have to be this way, and while deodorant might be enough to keep the smell at bay, there are an overwhelming number of options on the market for your underarms, from traditional antiperspirants to natural deodorants and even acids.
But what about everywhere else on your body where a funky scent might pop up? How does what we eat affect our smell, and can we really just drink chlorophyll to smell good, like TikTokers might have you believe?
First, it’s helpful to understand where the stench comes from. “Sweat glands and bacteria are the primary causes of body odor. Everyone’s sweat gland count and activity are different: The more glands and activity, the higher the risk of body odor,” explained Geeta Yadav, a board-certified dermatologist.
Sweat glands exist all over the body, but those located in areas with more hair follicles, like armpits, contain more fats, proteins and sugars than the sweat that might appear on your forehead, for example. This is the sweat that’s most responsible for body odor — but sweat alone isn’t smelly. “Bacteria, which naturally live on your skin, thrive in damp and dark conditions (such as those created by tight workout clothes, or just the nature of the armpit!). Bacteria break down keratin proteins on your skin and cause odor,” Yadav explained.
So, how do we keep from smelling bad?
Deodorants and antiperspirants for your underarms
While sometimes used interchangeably by the layman, deodorants and antiperspirants are not the same. Antiperspirants stop you from sweating, which means your armpits won’t be an ideal environment for bacteria and odor to thrive, so you’ll have no sweat and no smell. Deodorants don’t stop you from sweating, but they do make you smell better, either by covering up the scent of body odor, or helping inhibit it in the first place. Both of them are well-proven to keep armpits smelling fresh.
Even so-called natural deodorants, often ridiculed for their inability to prevent BO, can mask bad smells as long as your expectations are realistic: You will still sweat, and when switching to a natural deodorant you may encounter a few weeks of heightened armpit odor while pits “detox” before it begins to work. Look for ones with antibacterial ingredients like coconut oil and baking soda to reduce moisture.
Recently, though, antiperspirants, which use aluminum-based compounds, have come under fire for purportedly contributing to certain diseases, though the science falls flat and most experts agree they are safe. “Studies do not show a correlation between aluminum-based antiperspirants and health conditions such as breast cancer and Alzheimer’s disease, but ultimately, if using an aluminum-free formula gives you peace of mind, go for it,” Yadav said.
Chris Callewaert, a senior postdoctoral researcher at Ghent University and an expert on body odor (he even uses the handle Dr. Armpit online), likes the trend of moving away from aluminum antiperspirants, but not due to the scary health rumors. Instead, his research has found that antiperspirants negatively impact the armpit microbiome. This disruption can ultimately increase odor-causing bacteria. “Don’t use antiperspirant if you have slight malodor — this might make things worse in the long run,” he warned.
“Sweating is actually a very natural phenomenon and should not be needlessly blocked,” he added. Unless you have hyperhidrosis, a condition in which armpits sweat excessively, he recommends moderate use of regular deodorant instead.
For fans of acid deodorants, which are made with ingredients like lactic and mandelic acid that are typically reserved to exfoliate the face and smooth skin, here’s some good news: Callewaert approves. As the name applies, these products are acidic, just like the natural pH of the armpit. Typical deodorants tend to be more alkaline, so by keeping the armpit in balance, it leads to a healthy underarm microbiome and less odor. The exfoliating nature of acid deodorants help keep armpits clean, too, by removing sweat and odorous molecules better than water alone can.
Deodorant for everywhere else
While the focus of body odor is typically on the armpits, it’s not the only area that can produce smell — the same odor-producing glands that are located in the armpits can be found in the groin area. It’s better to save your deodorant for use in the armpits only. “I would not recommend it, as it will impact the microbiome, and some deodorants can really shift the microbiome to a worsened odor,” Callewaert said.
Instead, perfumes or essential oils can be used, as they have less impact on the microbiome along with a long-lasting effect.
“I’d recommend using deodorant wipes like those offered by Dove instead of a traditional stick. It won’t contain antiperspirant, but it will help refresh and combat odor,” Yadav said.
There’s also another alternative: deodorizing body sprays, creams and soaps that use pre- and probiotics to prevent BO. The pre- and probiotics directly interact with your skin’s microbiome, and a healthy microbiome — which these bacteria contribute to — will produce less odor. These are already being used in products like OffCourt and other body deodorants.
Not just any probiotics will work, though. “The lactobacilli and bacilli that are used now do not really occur naturally on the skin, and definitely not in high amounts,” Callewaert explained. “So they will only be transiently present when applied.” Probiotics also need to be alive to be effective, which isn’t often the case in deodorants or body washes.
How the foods you eat can contribute to BO
It’s not only what we put on our bodies that affects how we smell, but what we put in it, too. “Food can have a big impact on the skin
What’s good at preventing body odor is obvious: “It will be no surprise that we also found that the daily consumption of vegetables leads to an improved body odor, a less musty, less sour and less bad body odor, as well as significantly more non- or good-odorous bacteria in the underarms,” Callewaert said.
“Drinking lots of water, eating hydrating foods like cucumber and watermelon, and even eating citrus can help eliminate those bad odors,” Yadav said.
Credit: Source link